Pipe-coupling.



No. 895,617. I PATENTED AUG. 11, 1908.

K. W. GARLGREN. PIPE COUPLING.

APPLICATION FILED DEC. 9 1907.

2 SHEBTS-SHEET 1.

No.-s95,- 617. v PATBNTED AUG. 11, 1908. K. w; CARLGREN.

PIPE COUPLING. 4

APPLICATION FILED DEO.9,1907.

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' the 45 in the hanger 13. Each guide rod- 24isen- 55 through a slot 27, m the hanger 13.

KNUT W. cARLcR'EmoE 'sAL'riLAxncITY, UTAH.

PIPE-COUPLING.

Specification of Letters Patent.

i Application filed December 9, 1907. Serial No.-405,831.'

Patented Air un-i908.

10 the steam and air ipes 1n railway-air brakes.

' The coupling wor s automatically and con- ,nectsthe fluid pipes at the moment the cars are coupled, and vautomatically disconnects pipes, when the cars are uncou. led.

e device is adapted to be app iedto thg' T standard airor steam pi es now in use with comparatively snial cost.

The accompanying drawings illustrate the invention, in which v i Figurel is. a reduced side view, in operativeposition attached to the under sides of two contiguous cars,- which areshown frag- 'mentarily. Fig. 2 is a plan view of one .member of the device, the car and its coupler being removed. .Fig. 3 1s a vertical section of: a part of one member of the device. Fig. 4 is a front elevation of a coupling box. Fig. 5lis a horizontal cross section-on line .y-'y, of Fig. 4. Fig. 6'is a'rear elevation of a hanger whichis partly broken away to show the end of a guide and coil spring.

10 designates the bottom of a railway car,

, and 11 an ordinary car coupler. I 12-and 13 are hangers on the car bottoms,

to. support the pipe coupling mechanism.

The two members constituting my pipe coupling system are' su ported beneath adjacentic'ars and are su stantially alike, so

I that thedescri'ptionof one will apply to the 0ther,but in reversed relative position.- 14 is a box, provided with a rotatable tube.

15, movable in a sleeve 18, fixed on a recipro eating cross piece 23. Guide rods 24, on said-piece 23, extend through apertures 25,

1 circled by an extension coil spring 22,'which* extends from the piece 23 to the hanger 13,1 and, normally, forces the cross iece' 23 and;

the sleeve 18 outwardly, unt' the. funnel formed hood 19, fixed on said sleeve, con-.l

tacts with .the ,hanger 12 at an opening, through which the hood projects. The-tube 15 has a solid end 16, to which is keyeda twisted, elongated plate 26, which extelrids llS construction produces a rotation of the plate 23 and tube 15, when the device is forced back into operativeposition and causes the 5: to. interlock .with similar fingers on the tpbe of the coupling'on the adjoining car, and to remain interlocked, until theuncoulpling of the cars permits a separatiunoft urved fingers 17,, 17,,at the outer end of tube 7 0 rs, and a contemporaneous reverse rota-l 'tipn of the tube. 1'5, and the release ofthe fi gers-17.

- Steam and air are provided through thef usual pipes. The air; cannot enter "tube 15, however,,when the device is not in service, because the port 31 does not then aline lth the-pipe nipple 30. But the rotation of the tube by the impact and the. coupling to-- gether of the cars, brings the port 31 around 'and opposite to the pipe nipple 30, and makesa contmuous passage of t e fluid through e 30, and from the tube 15,011 one car,

theipi into t -eopposite tube on the next car, and so bn through the train. Other-tubes as 35,

in fthebrake system, are opened and closed simultaneously with the tube 15, by means of an arm 36, passed through a slot 37, in sleeve i8, and rigidly attached to tube 15, its outer. end h l i *arm 39 attached to a rock-shaft 40, journaled fin the box-14 and provided within the box with valves, for opening and closing the com rhunications between. the tubes 35 in both .rnembers of the device. In'order to secure certain. contact between the oppositely din-.- posed tubes 15, I provide the funnel form guide 19, on the sleeve 18, which, by its sliding contact with the circular opening in the hanger l2, compels an accurate alin'ement of the tubes 1 5, for positive, mutual en agement. Af'dowel guide 43', projects from t eface of each box 14, and is. adapted to engage a socket these parts. l I p What I claim and desire'to secure, is 17 In a fluid pipe coupling a supporting hanger. having apertures. and a vertical slot.

therein, a rotatable tube having terminal en'- gaging fingers, a sleeve on said tube, a recipe rocating cross piece on the inner end of said sleeve, guide rods on sand cross plece extend-.

ing through the apertures in said hanger, .expanslon coiled springs on said rods and a aving a link connection 38, with a crank.

44, in the opposite box to assist in alining iob twisted plate keyed to the innerend of said tube and extendingthrough the slotin said hanger, for the purpose specified.

' 2. Ina fluid pipe coupling a rotatable tube, a sleeve thereon having a slot therein, an

harm rigid on said tube and extending through 1 l through which said tube and sleeve extend said slot, a box on said sleeve, tubes in said and a funnel form guide on said sleeve, adaptbox, a rock-shaft provided with valves in 1 ed toengage said hanger at the edge of said said box, a crank on said rock-shaft and a aperture, forthe purpose described. I link connecting said crank and said arm, In testimony whereof I affix-my signature, whereby the rotating motion of the tube in presence of two Witnesses. rocks said shaft to open and close said valves e T In a pipe coupling a rotatable tube, a KNDT Vvi ARLGREL' longitudinally reciprocating sleeve thereon, Witnesses supporting hangers for said sleeve and tube, HENRY J CABEW, the foremost of which has a large aperture, VJILLIAM R I'IALL. 

